text: "use strict";
  var _ = require('lodash');
  var Workbook = require('./Excel/Workbook');
  var JSZip = require('jszip');
  //var WorkbookWorker = require('./Worker');
  
  /**
   * @name Excel
   * @public
   * @author Stephen Liberty
   * @requires underscore
   * @requires Excel/Workbook
   * @requires JSZIP
   * @exports excel-builder
   */
  var Factory = {
      /**
       * Creates a new workbook.
       */
      createWorkbook: function () {
          return new Workbook();
      },
  
      config: {
          forceUIThread: false
      },
  
      /**
       * Turns a workbook into a downloadable file.
       * @param {Excel/Workbook} workbook The workbook that is being converted
       * @param {Object} options
       * @param {Boolean} options.base64 Whether to 'return' the generated file as a base64 string
       * @param {Function} options.success The callback function to run after workbook creation is successful.
       * @param {Function} options.error The callback function to run if there is an error creating the workbook.
       * @param {String} options.requireJsPath (Optional) The path to requirejs. Will use the id 'requirejs' to look up the script if not specified.
       */
      createFileAsync: function (workbook, options) {
  
  
          workbook.generateFilesAsync({
              success: function (files) {
  
                  var worker = new Worker(require.toUrl('./Excel/ZipWorker.js'));
                  worker.addEventListener('message', function(event) {
                      if(event.data.status === 'done') {
                          options.success(event.data.data);
                      }
                  });
                  worker.postMessage({
                      files: files,
                      ziplib: require.toUrl('JSZip'),
                      base64: (!options || options.base64 !== false)
                  });
              },
              error: function () {
                  options.error();
              }
          });
      },
  
      /**
       * Turns a workbook into a downloadable file.
       * @param {Excel/Workbook} workbook The workbook that is being converted
       * @param {Object} options - options to modify how the zip is created. See http://stuk.github.io/jszip/#doc_generate_options
       * @returns {Promise}
       */
      createFile: function (workbook, options) {
          var zip = new JSZip();
          return workbook.generateFiles().then(function (files) {
              _.each(files, function (content, path) {
                  path = path.substr(1);
                  if(path.indexOf('.xml') !== -1 || path.indexOf('.rel') !== -1) {
                      zip.file(path, content, {base64: false});
                  } else {
                      zip.file(path, content, {base64: false, binary: true});
                  }
              });
              return zip.generate(_.defaults(options || {}, {
                  type: "blob"
              }));
          });
      }
  };
  
  
  module.exports = Factory;
  